Hkun Law was the second king of Hanthawaddy

Hanthawaddy Kingdom

The Hanthawaddy Kingdom was the dominant kingdom that ruled lower Burma from 1287 to 1539. The Mon-speaking kingdom was founded as Ramannadesa by King Wareru following the collapse of the Pagan Empire in 1287 as a nominal vassal state of Sukhothai Kingdom, and of the Mongol Yuan dynasty...

 from 1307 to 1311. He ascended to the throne after his elder brother King Wareru

Wareru

Wareru was the founder of the Ramanya Kingdom located in today's Lower Burma . The kingdom is more commonly known as Kingdom of Hanthawady Pegu , or simply Pegu although the kingdom's first capital was Martaban...

 was assassinated. Hkun Law was of Shan and Mon

Mon people

The Mon are an ethnic group from Burma , living mostly in Mon State, Bago Division, the Irrawaddy Delta, and along the southern Thai–Burmese border. One of the earliest peoples to reside in Southeast Asia, the Mon were responsible for the spread of Theravada Buddhism in Burma and Thailand...

 descent.

His kingdom remained a nominal vassal

Vassal

A vassal or feudatory is a person who has entered into a mutual obligation to a lord or monarch in the context of the feudal system in medieval Europe. The obligations often included military support and mutual protection, in exchange for certain privileges, usually including the grant of land held...

 of the Sukhothai Kingdom

Sukhothai kingdom

The Sukhothai Kingdom ) was an early kingdom in the area around the city Sukhothai, in north central Thailand. The Kingdom existed from 1238 till 1438...

 in the east but incurred raids to the Sittaung valley by another Tai kingdom of Lan Na. His brother, Yan Maw La Mon who was governor of Sittaung

Sittaung

Sittaung is a town in Paungbyin Township, Mawlaik District, in the Sagaing Region of Burma on the right bank of the Chindwin River. There is a highway running west to the Indian border which provides Tamu with access to transport on the Chindwin. This road was laid out in 1887 by troops under...

 and Donwun was killed in a Lan Na attack on Donwun. As he prepared to defend the raids, Hkun Law was assassinated in 1311 by his brother-in-law, who placed his son Saw O

Saw O

Saw O was the third king of Hanthawaddy Pegu, who reigned from 1311 to 1323. Saw O succeeded his maternal uncle Hkun Law, who was assassinated by Saw O's father Min Bala in 1311. When Saw O ascended to the throne, his kingdom was a nominal vassal of Sukhothai. He was even married to a daughter of...

on the throne.